Jacek's Blog

This space will be my creative hub—a place to brainstorm, refine, and share my ideas. Here, I’ll document my journey of growth, turning thoughts into projects and exploring new possibilities. Whether it’s a spark of inspiration or a completed work, everything I share here reflects my passion for learning and creating.

Posts

  • Jul 16, 2025

    Verifying Proxy Contracts Using Foundry

  • Jun 2, 2025

    Signature Malleability in Solidity: Understanding and Preventing ECDSA Attacks

  • May 21, 2025

    zk-SNARKS Under the Hood - How They Work

  • May 21, 2025

    The Game-Changing EIP-7702

  • Apr 23, 2025

    Token Approvals in Ethereum: From ERC20 to Permit2

  • Mar 13, 2025

    Secure Gas Forwarding in Smart Contracts: Preventing Insufficient Gas Griefing Attacks

  • Feb 19, 2025

    Safely Interacting with External Smart Contracts: A Developer’s Guide

  • Dec 5, 2024

    Get blockchain address from AWS KMS

  • Nov 21, 2024

    Liquidity Pool Math

  • Oct 17, 2024

    Account Abstraction

  • Oct 14, 2024

    ERC-165: Standard Interface Detection in EVM Smart Contracts

  • Aug 28, 2024

    Use Python’s Logging Module with a Trace Id

  • Jul 19, 2024

    Connect Cloudflare Zero Trust Tunnel to VPC with private hosted zone in AWS

  • Jul 12, 2024

    AWS Certified Security Specialty

  • Jun 12, 2024

    Cloudflare Zero Trust Protect Resource

  • Jun 7, 2024

    Github Workflow with AWS OIDC

  • Jun 4, 2024

    AWS default security groups

  • May 27, 2024

    Ethernaut Walkthrough

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Jacek's Blog

  • Jacek Varky
  • jacekv
  • Jacek Varky
  • jacekv

Collection of different articles and thoughts on various topics. Whatever I am working on and I feel that I might need it later, is going to be written down here ;) You never know.